Do Jewish priests somewhere in the world know God's true name?

In ancient times of Judaism, only the high priest was entrusted to know God's fully pronounced name. To the common people it was simply just rendered as YHWH, similar to initials. Since the name was so confidential it was easily lost throughout the years. But don't you think there might be some hardcore Jewish priests or Jews who know the name? And according to tradition, are not suppose to utter it? I thought that maybe, it was possible to study the Hebrew language and it's origins far and deep enough to uncover the correct pronunciation. But I no longer believe this since there are very many scholars and word servants out there who still don't know how to exactly pronounce it. Some say it's Yahweh, but this isn't 100% confirmed. I understand the Hebrew language has no vowels but his name certainly was not just YHWH. There were sounds in-between those letters. So do you think it's possible that there may be some hardcore Jews today who know how to say it and just don't want to for the sake of tradition?